CN113451676A

CN113451676A - Battery box and electric automobile

Info

Publication number: CN113451676A
Application number: CN202010168076.0A
Authority: CN
Inventors: 仇丹梁
Original assignee: Aulton New Energy Automotive Technology Co Ltd
Current assignee: Aulton New Energy Automotive Technology Co Ltd
Priority date: 2020-03-11
Filing date: 2020-03-11
Publication date: 2021-09-28

Abstract

The invention discloses a battery box and an electric automobile, wherein the battery box comprises a box body, a pipeline is embedded in at least one side wall of the box body, or a pipeline is arranged on the inner side or the outer side of at least one side wall of the box body, and a fluid medium flows in the pipeline after the pipeline is communicated with an external pipeline. According to the battery box, the pipeline is arranged inside or outside the side wall of the box body, and is communicated with the external pipeline, so that a fluid medium can flow in the pipeline, and further, heat in the box body can be exchanged with heat of the fluid medium, and therefore the heat in the box body can be controlled in a proper range, and the service life of the battery box can be prolonged. Because the pipeline is arranged in the side wall of the box body or on the outer side of the side wall, the battery of the box body cannot be adversely affected after the fluid medium leaks or seeps, and short circuit cannot be caused due to the fluid medium.

Description

Battery box and electric automobile

Technical Field

The invention relates to the field of electric automobile equipment, in particular to a battery box and an electric automobile.

Background

At present, two modes of charging and battery replacement are mainly used for acquiring energy of the electric automobile. Due to the battery replacement mode, the electric energy can be rapidly supplied, the waiting time of customers is reduced, and the utilization rate of the battery replacement station is improved. In addition, the battery can be charged in a centralized manner at night, and peak shaving energy storage of the power load is realized. Meanwhile, the comprehensive utilization efficiency of the power equipment is improved, the service life of the battery is prolonged, and the method has high popularization value and economic significance.

In an electric vehicle, a cooling pipe provided in a battery box is connected to a cooling system on the electric vehicle, and the heat balance of the battery box is achieved by using the circulation of a coolant. However, since the cooling pipe is provided inside the battery box, if a pipe break or a leak occurs, the battery box may be short-circuited, and further, an accident such as a fire may occur.

Disclosure of Invention

The invention aims to overcome the defect that a leaked liquid cooling pipe easily causes a battery box fault in the prior art, and provides a battery box and an electric automobile.

The invention solves the technical problems through the following technical scheme:

the utility model provides a battery box, its includes the box, the at least one lateral wall of box is embedded to have the pipeline, perhaps the inboard or the outside of at least one lateral wall of box is provided with the pipeline, supply fluid medium to flow in the pipeline after pipeline and outside pipeline intercommunication.

In this scheme, through adopting above structure, with the inside of pipeline setting at the lateral wall of box or the outside of lateral wall to be linked together pipeline and outside pipeline, thereby fluid medium can flow at the pipeline, and then makes the heat in the box and fluid medium's heat can exchange, thereby is favorable to controlling the heat in the box at suitable within range, is favorable to improving the life-span of battery box. Because the pipeline is arranged in the side wall of the box body or on the outer side of the side wall, the battery of the box body cannot be adversely affected after the fluid medium leaks or seeps, and short circuit cannot be caused due to the fluid medium.

Preferably, an accommodating space is formed in the side wall of the box body, and the pipeline is arranged in the accommodating space.

In this scheme, through structure more than adopting, through set up the accommodation space in the lateral wall, be favorable to avoiding the pipeline to be destroyed by external force, be favorable to reducing the cracked risk of pipeline, be favorable to improving the security of pipeline, and then be favorable to improving the security of battery box.

Preferably, the pipeline in the side wall of the box body and the side wall are cast and integrally formed.

In this scheme, through adopting above structure, do benefit to casting integrated into one piece's pipeline and box, be favorable to simplifying the design and the manufacturing of battery box, be favorable to improving the reliability of battery box.

Preferably, the outer side surface of the side wall of the box body is provided with a convex part which protrudes outwards, and an accommodating space is formed in the convex part; or the inner side surface of the side wall of the box body is provided with a convex part which protrudes outwards, and an accommodating space is formed in the convex part; the pipeline is arranged in the accommodating space.

In this scheme, through structure more than adopting, through set up the accommodation space in the bellying to only need to increase the thickness of lateral wall in the position department that is equipped with the bellying, and then can reduce the thickness of the lateral wall of other positions, be favorable to reducing the average thickness of lateral wall, be favorable to reducing the total weight of lateral wall, and then be favorable to reducing the total weight of battery box.

Preferably, the pipeline is embedded inside the lower side wall of the box body, or the pipeline is arranged inside or outside the lower side wall of the box body.

In this scheme, through adopting above structure, with the inside of pipeline setting lateral wall under or the inboard or the outside of lateral wall down, even the fluid medium takes place the seepage, under the effect of gravity, fluid medium will directly flow out the battery box, is favorable to avoiding fluid medium to cause harmful effects to the battery of box, can not be because of fluid medium cause the short circuit, is favorable to improving the security of battery box.

Preferably, the battery box further comprises a pipeline joint, the pipeline joint is arranged on the side wall of the box body of the battery box, two ends of the pipeline are respectively connected with the pipeline joint, and the pipeline is communicated with the external pipeline through the pipeline joint.

In this scheme, through adopting above structure, utilize the pipeline to connect, be favorable to improving the pipeline of battery box and outside pipe connection's efficiency, stability and security.

Preferably, the pipeline joint comprises an on-off valve which can be connected or disconnected so as to connect or disconnect the pipeline with the external pipeline.

In this scheme, through adopting above structure, when the battery box is not connected with the outside pipeline, lead to the stop valve and can seal the fluid medium in the pipeline effectively, avoid fluid medium outflow. When the battery box is connected with the external pipeline, the through-stop valve can be quickly communicated with the external pipeline, and further flow of fluid media is facilitated.

Preferably, the open/close valve is one of a connector joint or a connector plug, one connector joint and a correspondingly arranged connector plug form a connector, and the connector joint and the connector plug can be mutually matched to realize the communication or disconnection of the fluid medium.

Preferably, the pipeline joint is a plug joint, the plug joint includes: the joint comprises a joint valve core, a joint valve plug, a joint valve shell and a joint elastic piece; one end of the connector valve shell is an open end, and the open end is used for receiving an inserting plug; the joint valve core is fixedly arranged in the joint valve shell, and a fluid medium channel is formed between the opening end and the joint valve shell; the joint valve plug is disposed around the joint valve spool and is capable of reciprocating between an open position that opens the fluid medium passage and a closed position that closes the fluid medium passage; the coupling elastomeric member biases the coupling valve plug in a direction that moves the coupling valve plug toward the closed position.

Or, the pipeline connects for the plug connector plug, the plug connector plug includes: the plug valve core, the plug valve shell and the plug elastic piece; an insertion end opening of the plug valve housing; the plug valve core is arranged in the plug valve shell and can reciprocate between a first position for opening the opening of the insertion end and a second position for closing the opening of the insertion end; the plug spring biases the plug valve spool in a direction to move the plug valve spool toward the second position; the insertion end is used for being inserted into the opening end.

In this scheme, through structure more than adopting, utilize plug connector joint or plug connector plug to connect as the pipeline, be favorable to improving the leakproofness that the pipeline connects, be favorable to reducing the risk that takes place fluid medium and leak.

Preferably, the pipeline joint is further provided with a guide part, and the guide part is a convex part or a concave part.

In this scheme, through adopting above structure, utilize the guide, be favorable to improving the precision that the pipeline connects and the butt joint of outside pipeline, and then be favorable to improving the efficiency of pipeline and outside pipeline intercommunication.

Preferably, the battery box further comprises an electrical connector, and the electrical connector and the pipeline joint are arranged on the same side wall of the battery box.

In this scheme, through adopting above structure, be favorable to putting through the circuit and the pipeline of battery box simultaneously.

Preferably, the pipeline joint is arranged on the electric connector.

In this scheme, through adopting above structure, be favorable to putting through the circuit and the pipeline of battery box simultaneously, still simplified the installation of pipeline joint and electric connector for pipeline joint and electric connector can integrative installation.

An electric vehicle comprises the battery box.

In this scheme, through adopting above structure, be favorable to improving the security of battery box, be favorable to reducing the risk of battery box short circuit, be favorable to improving electric automobile's security.

On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.

The positive progress effects of the invention are as follows:

according to the invention, the pipeline is arranged inside or outside the side wall of the box body and communicated with the external pipeline, so that the fluid medium can flow in the pipeline, and further the heat in the box body can be exchanged with the heat of the fluid medium, thereby being beneficial to controlling the heat in the box body within a proper range and prolonging the service life of the battery box. Because the pipeline is arranged in the side wall of the box body or on the outer side of the side wall, the battery of the box body cannot be adversely affected after the fluid medium leaks or seeps, and short circuit cannot be caused due to the fluid medium.

Drawings

Fig. 1 is a schematic structural view of a case body of a battery case according to a preferred embodiment of the present invention.

Fig. 2 is a schematic structural view of a pipe of a battery box according to a preferred embodiment of the present invention.

Fig. 3 is a schematic structural view of a pipe joint including a plug joint of a battery case according to a preferred embodiment of the present invention.

Fig. 4 is a schematic sectional view of the pipeline joint in fig. 3.

Fig. 5 is a schematic structural view of a pipe joint of a battery case including a connector plug according to a preferred embodiment of the present invention.

Fig. 6 is a schematic structural view of the pipe joint in fig. 5.

Fig. 7 is a schematic structural view of the pipe joint of fig. 3 and 5.

Fig. 8 is a schematic structural view of the battery terminal connector card of fig. 7 in cross section.

Fig. 9 is a schematic structural view of a plug connector tab and a plug connector plug of a battery pack according to a preferred embodiment of the present invention.

Fig. 10 is a schematic sectional view illustrating a plug connector tab and a plug connector plug of a battery pack according to a preferred embodiment of the present invention.

Fig. 11 is a schematic view showing the construction of the plug connector tab of the battery pack and the plug connector tab card according to the preferred embodiment of the present invention, both of which are in a normally connected state.

Fig. 12 is a schematic structural view of the plug connector tab and the plug connector card of the battery pack according to the preferred embodiment of the present invention, both of which are in an extreme insertion state.

Fig. 13 is a schematic cross-sectional view illustrating an electrical connector provided with a pipe joint of a battery case according to a preferred embodiment of the present invention.

Description of reference numerals:

battery box 500

Case 51

Conduit 52

Convex part 53

Pipe joint 60

Guide 61

Guide hole 611

Guide post 612

Fixing plate 62

Sheath 63

Floating plate 64

Tension spring 65

Water pipe connector 66

Inner cover plate 67

Outer cover plate 68

Fixed seat 69

Plug-in connector 10

Connector joint 20

Joint valve core 21

Joint valve plug 22

Connector valve housing 23

Open end 231

Fluid medium channel 232

Step surface 233

First circulation opening 24

Joint elastic member 25

First seal 26

Second seal 27

Insertion groove 271

Sealing convex ring 272

Plug-in connector plug 30

Plug valve core 31

Plug valve housing 32

Insertion end 321

Spacing surface 322

Second flow port 323

Plug elastic piece 33

Electrical connector 40

Electric connection portion 41

Connecting part 42

Electric connector plug 43

Electrical connector contact 44

Detailed Description

The present invention will be more clearly and completely described below by way of examples in conjunction with the accompanying drawings, but the present invention is not limited thereto.

As shown in fig. 1 to 13, the present embodiment is a battery box 500, which includes a box body 51, a pipeline 52 embedded in at least one sidewall of the box body 51, or a pipeline 52 disposed inside or outside at least one sidewall of the box body 51, and after the pipeline 52 is communicated with an external pipeline, a fluid medium flows in the pipeline 52. The side wall is any one surface of the box body 51, and in the case of a rectangular box body, the side wall is any one of the front, rear, left, right, upper and lower surfaces of the rectangular box body, not only surfaces on both sides. In this embodiment, the pipeline 52 is disposed inside the sidewall of the box 51 or outside the sidewall, and the pipeline 52 is communicated with an external pipeline, so that the fluid medium can flow through the pipeline 52, and further the heat in the box 51 can be exchanged with the heat of the fluid medium, thereby being beneficial to controlling the heat in the box 51 in a suitable range and prolonging the service life of the battery box 500. Since the pipe 52 is provided inside or outside the side wall of the case 51, the battery of the case 51 is not adversely affected even when the fluid medium leaks or leaks, and short-circuiting due to the leakage or seepage of the fluid medium is not caused. The case 51 in fig. 1 shows only the lower case and the duct 52 provided in the lower case, and other parts of the battery case are not shown. Fig. 2 shows one arrangement pattern of the pipes 52, and in other embodiments, the pipes 52 may also adopt other arrangement patterns, such as the pipes 52 are arranged in an "S" shape, a "loop" shape, and the like.

In a preferred embodiment, a housing space is formed in a sidewall of the box 51, and the pipeline 52 is disposed in the housing space. This embodiment is favorable to avoiding pipeline 52 to be destroyed by external force through set up the accommodation space in the lateral wall, is favorable to reducing the cracked risk of pipeline 52, is favorable to improving the security of pipeline 52, and then is favorable to improving battery box 500's security.

In a preferred embodiment, as shown in fig. 1, the duct 52 in the side wall of the box 51 is integrally formed with the side wall by casting. In the present embodiment, the pipe 52 and the case 51 are integrally formed by casting, which is beneficial to simplifying the design form and manufacture of the battery case 500 and improving the reliability of the battery case 500.

In order to facilitate the arrangement of the pipeline 52, as shown in fig. 1, the outer side surface of the side wall of the box body 51 is provided with a convex part 53 protruding outwards, and an accommodating space is formed in the convex part 53; the pipe 52 is disposed in the accommodating space. This embodiment is through setting up the accommodation space in bellying 53 to only need to increase the thickness of lateral wall in the position department that is equipped with bellying 53, and then can reduce the thickness of the lateral wall of other positions, be favorable to reducing the average thickness of lateral wall, be favorable to reducing the total weight of lateral wall, and then be favorable to reducing the total weight of battery box 500. In other embodiments, the inner side surface of the sidewall of the box 51 may also have a convex portion 53 protruding outward, and an accommodating space is formed in the convex portion 53; the pipe 52 is disposed in the accommodating space.

As a preferable embodiment, the duct 52 of the present embodiment is embedded inside the lower sidewall of the box body 51, and in other embodiments, the duct 52 is disposed inside or outside the lower sidewall of the box body 51. This embodiment sets up pipeline 52 in the inside of lower lateral wall or the inboard or the outside of lower lateral wall, even fluid medium takes place the seepage, under the effect of gravity, fluid medium will directly flow out battery box 500, is favorable to avoiding fluid medium to cause harmful effects to the battery of box 51, can not cause the short circuit because of fluid medium's seepage, is favorable to improving battery box 500's security.

In order to improve the connection efficiency, the battery box 500 further includes a pipe joint 60, the pipe joint 60 is disposed on a sidewall of the box body 51 of the battery box 500, the pipe joint 60 is connected to each end of the pipe 52, and the pipe 52 is communicated with an external pipeline through the pipe joint 60. The present embodiment utilizes the pipe joint 60, which is beneficial to improving the efficiency, stability and safety of connecting the pipe 52 of the battery box 500 with the external pipe.

As a preferred embodiment, as shown in fig. 3 to 8, the pipe joint 60 is further provided with a guide 61, and the guide 61 is a convex or concave member. The guide member 61 is utilized in the embodiment, which is beneficial to improving the butt joint precision of the pipeline joint 60 and the external pipeline, and is further beneficial to improving the communication efficiency of the pipeline 52 and the external pipeline. The guide 61 of fig. 3 and 4 is a concave part, specifically a circular tube, and the inner hole of the circular tube is a guide hole 611, and the guide hole 611 is used for inserting the guide post 612. The guide 61 of fig. 5 and 6 is a protrusion, specifically a guide column 612, and the guide column 612 is inserted into the guide hole 611.

As shown in fig. 3 to 8, the on-off valve may be one of the connector plug 20 or the connector plug 30, one connector plug 20 and a correspondingly disposed connector plug 30 constitute the connector 10, and the connector plug 20 and the connector plug 30 can cooperate with each other to connect or disconnect the fluid medium.

In a preferred embodiment, the line connector 60 is a connector 20, and the connector 20 includes: a joint valve core 21, a joint valve plug 22, a joint valve shell 23 and a joint elastic piece 25; one end of the connector valve housing 23 is an open end 231, and the open end 231 is used for receiving a plug; the joint valve core 21 is fixedly arranged inside the joint valve shell 23, and a fluid medium channel 232 is formed between the opening end 231 and the joint valve shell 23; the joint valve plug 22 is disposed around the joint spool 21 and is capable of reciprocating between an open position that opens the fluid medium passage 232 and a closed position that closes the fluid medium passage 232; the joint resilient member 25 biases the joint valve plug 22 in a direction that moves the joint valve plug 22 toward the closed position.

In a preferred embodiment, the line connection 60 is a connector plug 30, and the connector plug 30 includes: a plug valve core 31, a plug valve shell 32, a plug elastic piece 33; the insertion end 321 of the plug valve housing 32 is open; the plug valve spool 31 is provided inside the plug valve housing 32 and is capable of reciprocating between a first position that opens the opening of the insertion end 321 and a second position that closes the opening of the insertion end 321; the plug spring 33 biases the plug spool 31 in a direction to move the plug spool 31 toward the second position; the insertion end 321 is for insertion into the open end 231.

In the embodiment, the plug connector joint or the plug connector plug is used as the pipeline joint 60, which is beneficial to improving the sealing performance of the pipeline joint 60 and reducing the risk of leakage of fluid medium.

As a specific embodiment, referring to fig. 3 and 4, the pipe joint 60 of the present embodiment is a plug joint 20. The connector tab is provided on the fixing plate 62, and guide holes 611 are provided at both sides of the connector tab 20.

As another specific embodiment, referring to fig. 5 and 6, the pipe joint 60 of the present embodiment is a plug 30. The connector plug 30 is disposed on the floating plate 64, and guide posts 612 are provided on both sides of the connector plug 30. The guide column 612 and the connector plug 30 are both provided on the floating plate 64. The floating plate 64 may be a rectangular plate, and four corners of the floating plate 64 are respectively provided with tension springs 65, and the floating plate 64 is connected to the fixing base 69 by the tension springs 65. The floating plate 64 is movable in the direction of the spring force of the tension spring 65 with respect to the fixed base 69, and thereby moves the guide post 612 and the connector plug 30. When the guide post 612 is inserted into the guide hole 611, the floating plate 64 can be flexibly adjusted in position. An inner cover plate 67 and an outer cover plate 68 are arranged on two sides of the fixed seat 69. The inner side of the inner cover 67 is provided with a sheath 63, which sheath 63 is deformed by compression and thus seals against the further line connection 60. The plug connector is also connected to a water line connector 66, and the outer side of the outer cover plate 68 is also provided with a jacket 63, which jacket 63 serves to seal off the outer line 52.

As shown in fig. 7 and 8, the two line connectors 60 are engaged with each other. The guide elements 61 of the two line connections 60 are plugged together. The plug connector contact 20 and the plug connector plug 30 abut against each other to communicate the fluid medium passage.

As shown in fig. 9-12, which show a structural schematic of the plug-in unit in detail.

As shown in fig. 9 to 10, the plug-in unit 10 includes: a plug connector contact 20 and a plug connector plug 30. The plug connector stub 20 and the plug connector plug 30 are capable of mating with each other to achieve fluid communication. The fluid medium may be, for example, water, a liquid such as ethylene glycol, or an air-conditioning hot/cold gas.

The plug connector joint 20 includes: a joint valve core 21, a joint valve plug 22, a joint valve shell 23 and a joint elastic piece 25.

One end of the connector valve housing 23 is an open end 231, the open end 231 being adapted to receive a plug connector.

The joint valve spool 21 is fixedly disposed inside the joint valve housing 23, and forms a fluid medium passage 232 between the open end 231 and the joint valve housing 23. In the present embodiment, the joint valve body 21 is fixed to the inside of the joint valve housing 23 by screwing. The tip of the joint valve body 21 is provided with an external thread, and the inside of the joint valve housing 23 is provided with a threaded hole into which the joint valve body 21 is screwed. In other embodiments, the joint valve core may be fixed inside the joint valve housing by welding, bonding, or the like.

The joint valve plug 22 is disposed around the joint spool 21 and is capable of reciprocating between an open position that opens the fluid medium passage 232 and a closed position that closes the fluid medium passage 232.

The joint resilient member 25 biases the joint valve plug 22 in a direction that moves the joint valve plug 22 toward the closed position.

In this embodiment, the joint elastic member 25 is a spring, and in other embodiments, other suitable elastic members may be selected.

A first passage opening 24 is provided in the connector valve housing 23, and the coolant enters or exits the interior of the connector valve housing 23 through the first passage opening 24.

The plug-in unit plug 30 includes: plug valve core 31, plug valve shell 32, plug elastic member 33.

The insertion end 321 of the plug valve housing 32 is open.

The plug valve spool 31 is provided inside the plug valve housing 32 and is capable of reciprocating between a first position that opens the opening of the insertion end 321 and a second position that closes the opening of the insertion end 321.

The plug spring 33 biases the plug spool 31 in a direction to move the plug spool 31 toward the second position.

The insertion end 321 is for insertion into the open end 231.

In this embodiment, the plug elastic member 33 is a spring, and in other embodiments, other suitable elastic members may be selected.

An insertion hole is provided in the plug valve housing 32, the plug spool 31 is slidably inserted into the insertion hole, and a spring is fitted over the plug spool 31 and abuts between the plug valve housing 32 and the plug spool 31.

A second passage 323 is provided in the plug valve housing 32, and the coolant enters or exits the interior of the plug valve housing 32 through the second passage 323.

As shown in fig. 11, when the plug 10 is normally connected, the plug 30 is inserted into the plug connector 20, the insertion end 321 of the plug valve housing 32 of the plug 30 abuts against the plug valve stopper 22 of the plug connector 20, so that the plug valve stopper 22 moves toward the open position against the elastic force of the joint elastic member 25, the fluid medium passage 232 is opened, and at the same time, the plug spool 21 of the plug connector 20 abuts against the plug spool 31 of the plug 30, so that the plug spool 31 moves toward the first position to open the opening of the insertion end 321. Thus, the opening of the insertion end 321 and the fluid medium passage 232 are simultaneously opened, and the plug connector tap 20 and the plug connector plug 30 communicate with each other, so that the cooling liquid flows out of or into the battery pack through the plug connector 10.

The plug-in connector 10 realizes fluid communication through bidirectional extrusion, realizes that the plug-in connector respectively has a self-locking function but can automatically communicate when being connected, but does not drip when being detached.

The plug connector 20 also includes a first seal 26, the first seal 26 being disposed between the outer periphery of the connector valve plug 22 and the inner wall of the connector valve housing 23.

By providing the first seal member 26 between the outer periphery of the joint valve plug 22 and the inner wall of the joint valve housing 23, the sealability between the joint valve plug 22 and the inner wall of the joint valve housing 23 is enhanced.

The inner wall of the union valve housing 23 is provided with a groove in which a first sealing member 26 is provided.

The first seal 26 is an O-ring.

The end face of the end of the plug 22 facing the open end 231 is provided with a second seal 27.

By providing the second seal member 27 on the end surface of the plug 22 facing the open end 231, the sealing between the connector plug 30 and the connector fitting 20 is enhanced when they are engaged.

The second seal 27 extends toward the inner circumferential surface of the joint valve plug 22 for sealing a gap between the joint valve plug 22 and the joint valve core 21.

Thus, the second sealing member 27 not only strengthens the sealing member between the plug connector 20 and the plug connector 30, but also strengthens the sealing property between the plug connector 21 and the plug connector 22.

The second sealing member 27 is disposed around an end of the plug 22 facing the open end 231. The second seal 27 is provided in the form of a kit for ease of installation.

The second seal 27 has an annular structure and is provided with an insertion groove 271 and a seal protruding ring 272, an insertion portion for engaging with the insertion groove 271 is provided at one end of the joint valve plug 22 facing the open end 231, and the seal protruding ring 272 is provided on the opposite side of the insertion groove 271.

The second seal 27 is provided with at least two sealing beads 272. The two sealing rings 272 provide two seals to ensure that the connector 20 and the connector plug 30 are sealed when they are engaged.

One end of the joint spool 21 toward the open end 231 is of a tapered structure and tapers toward the interior of the joint valve housing 23. Thus, the joint spool 21 and the joint valve housing 23 form therebetween an outwardly tapered fluid medium passage 232, so that the joint valve plug 22 easily closes the fluid medium passage 232.

The interior of the coupling valve housing 23 is provided with a stepped surface 233, the stepped surface 233 serving to limit the distance the coupling valve plug 22 moves toward the open position.

As shown in FIG. 12, the plug 30 has been inserted to the limit of the plug connector 20 and the connector plug 22 abuts the stepped surface 233.

The plug valve housing 32 of the plug connector 30 of the present embodiment is further provided with a limiting surface 322 on the outer surface thereof, and the limiting surface 322 abuts against the end of the connector valve housing 23 to prevent the plug connector 30 from being excessively inserted.

The inner circumferential surface of the open end 231 of the joint valve housing 23 is provided with an inclined guide surface.

The outer peripheral surface of the insertion end 321 is provided with an inclined guide structure, and the inclined guide structure is matched with the inclined guide surface.

Thus, the plug connector 30 is easily and accurately inserted into the plug connector contact 20.

As an embodiment, the battery box 500 further includes an electrical connector 40, and the electrical connector 40 and the pipe joint 60 are disposed on the same sidewall of the battery box 500.

In other embodiments, as shown in FIG. 13, line connector 60 is provided on electrical connector 40. This embodiment facilitates simultaneous connection of the circuit of the battery box 500 and the conduit 52. Specifically, as shown in fig. 13, the electrical connector 40 includes an electrical connection portion 41 and a connection portion 42, and the connection portion 42 includes the plug-in unit 10 as described above.

The electrical connector 40 includes an electrical connector plug 43 and an electrical connector joint 44, one of the plug connector plug 30 and the plug connector joint 20 is provided in the electrical connector plug 43, and the other of the plug connector plug 30 and the plug connector joint 20 is provided in the electrical connector joint 44.

The electrical connector 40 can improve the liquid-tightness by using the connector 10, and prevent the electrical connector 40 from short-circuiting or leaking electricity due to the leakage of liquid.

In other embodiments, the battery box 500 of the present embodiment may also be used in an electric vehicle. This embodiment is favorable to improving battery box 500's security, is favorable to reducing the risk of battery box 500 short circuit, is favorable to improving electric automobile's security.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims

1. The battery box is characterized by comprising a box body, wherein a pipeline is embedded in at least one side wall of the box body, or a pipeline is arranged on the inner side or the outer side of the at least one side wall of the box body, and fluid media flow in the pipeline after the pipeline is communicated with an external pipeline.

2. The battery box according to claim 1, wherein a receiving space is formed in a side wall of the box body, and the duct is disposed in the receiving space.

3. The battery box of claim 2, wherein the duct in the side wall of the box body is integrally formed with the side wall by casting.

4. The battery box according to claim 1, wherein the outer side of the side wall of the box body is provided with a convex part which protrudes outwards, and an accommodating space is formed in the convex part;

or the inner side surface of the side wall of the box body is provided with a convex part which protrudes outwards, and an accommodating space is formed in the convex part;

the pipeline is arranged in the accommodating space.

5. The battery box according to claim 1, wherein the pipe is embedded inside the lower sidewall of the box body, or the pipe is provided inside or outside the lower sidewall of the box body.

6. The battery box according to claim 1, wherein the battery box further comprises a pipeline joint, the pipeline joint is disposed on a side wall of the battery box body, the pipeline joint is connected to two ends of the pipeline respectively, and the pipeline is communicated with the external pipeline through the pipeline joint.

7. The battery box of claim 6, wherein the conduit connector includes an on-off valve that can be opened or closed to allow the conduit to be connected or disconnected from the external conduit.

8. The battery box of claim 7, wherein the open/close valve is one of a plug connector joint or a plug connector plug, one plug connector joint and a correspondingly arranged plug connector plug form a plug connector, and the plug connector joint and the plug connector plug can be mutually matched to realize the connection or disconnection of the fluid medium.

9. The battery box of claim 8, wherein the on-off valve is a plug connector comprising: the joint comprises a joint valve core, a joint valve plug, a joint valve shell and a joint elastic piece;

one end of the connector valve shell is an open end, and the open end is used for receiving an inserting plug;

the joint valve core is fixedly arranged in the joint valve shell, and a fluid medium channel is formed between the opening end and the joint valve shell;

the joint valve plug is disposed around the joint valve spool and is capable of reciprocating between an open position that opens the fluid medium passage and a closed position that closes the fluid medium passage;

the coupling elastomeric member biasing the coupling valve plug in a direction that moves the coupling valve plug toward the closed position;

or;

the logical stop valve is the plug connector plug, the plug connector plug includes: the plug valve core, the plug valve shell and the plug elastic piece;

an insertion end opening of the plug valve housing;

the plug valve core is arranged in the plug valve shell and can reciprocate between a first position for opening the opening of the insertion end and a second position for closing the opening of the insertion end;

the plug spring biases the plug valve spool in a direction to move the plug valve spool toward the second position;

the insertion end is used for being inserted into the opening end.

10. The battery box according to any one of claims 6 to 9, characterized in that the pipe joint is further provided with a guide member, which is a convex member or a concave member.

11. The battery box of claim 6, further comprising an electrical connector disposed on the same side wall of the battery box as the pipe joint.

12. The battery box of claim 11, wherein the conduit connector is disposed on the electrical connector.

13. An electric vehicle, characterized in that it comprises a battery box according to any one of claims 1 to 12.